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Finding the Fourth Proportional to 11,387.88, 15,727.43 and 10,151.01

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Solution

The fourth proportional to 11,387.88, 15,727.43 and 10,151.01 is: 14,019.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,387.88 : 15,727.43 = 10,151.01 : x
  2. Step 2: Convert to fraction form
    11,387.88/15,727.43 = 10,151.01/x
  3. Step 3: Cross multiply
    11,387.88x = 15,727.43 × 10,151.01
  4. Step 4: Simplify right side
    11,387.88x = 159,649,324.58
  5. Step 5: Solve for x
    x = 159,649,324.58/11,387.88
  6. Step 6: Final answer
    x = 14,019.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.